Experimentally it was found that a metal oxide has formula $M_{0.98}O$. Metal M, is present as $M^{2+}$ and $M^{3+}$ in its oxide. Fraction of the metal which exists as $M^{3+}$ would be :

Question

( A ) 4.08 %
( B ) 5.08 %
( C ) 7.01 %
( D ) 6.05 %